Single-Direction Thrust Ball Bearings

**Introduction to NSK’s Single Direction Thrust Ball Bearings: Precision Motion and Control for Demanding Applications**

In the realm of precision motion and control, NSK stands as a global leader, delivering high-performance bearing solutions engineered for reliability, efficiency, and durability. Among its extensive portfolio, NSK’s **Single Direction Thrust Ball Bearings** excel in applications requiring robust axial load support with minimal friction, making them indispensable in industrial machinery, automotive systems, and precision equipment.

### **Technical Features and Design Excellence**
NSK’s Single Direction Thrust Ball Bearings are meticulously designed to handle unidirectional axial loads while maintaining smooth rotational performance. Key features include:
– **Optimized Raceway Geometry**: Precision-ground raceways and high-quality steel balls ensure uniform load distribution, reducing stress concentrations and extending service life.
– **Robust Cage Designs**: Available in pressed steel, machined brass, or polymer cages, these bearings minimize friction and wear while maintaining alignment under high-speed or high-load conditions.
– **Material Innovation**: Advanced steel alloys and heat treatment processes enhance hardness and fatigue resistance, ensuring consistent performance in harsh environments.
– **Sealing and Lubrication Options**: Customizable with shields, seals, or specialized lubricants to suit contamination-prone or high-temperature applications.

### **Performance Advantages**
NSK’s thrust ball bearings deliver measurable benefits for critical motion systems:
– **High Load Capacity**: Engineered to withstand significant axial loads without compromising rotational accuracy, ideal for heavy-duty presses, gearboxes, or lifting equipment.
– **Low Friction and Energy Efficiency**: Precision manufacturing reduces torque losses, contributing to energy savings in automotive transmissions or industrial pumps.
– **Long Service Life**: Superior materials and lubrication technologies minimize wear, reducing maintenance downtime in continuous-operation machinery.
– **Compact and Lightweight**: Space-saving designs enable integration into compact assemblies, such as robotics or aerospace actuators.

### **Typical Applications**
These bearings are widely deployed across industries where axial load management is critical:
– **Industrial Machinery**: Used in machine tool spindles, conveyor systems, and hydraulic pumps to ensure precise axial positioning.
– **Automotive Systems**: Found in clutch release mechanisms, steering columns, and transmission systems to handle dynamic thrust forces.
– **Precision Equipment**: Essential for medical devices, robotics, and optical instruments requiring smooth, backlash-free motion.

NSK’s Single Direction Thrust Ball Bearings exemplify the company’s commitment to innovation, combining cutting-edge engineering with rigorous quality standards. Whether in high-speed automation or rugged industrial environments, these bearings provide the reliability and precision demanded by modern motion control systems. By leveraging NSK’s expertise, engineers can optimize performance, reduce operational costs, and extend the lifespan of critical machinery.

For applications where axial load capacity and precision are non-negotiable, NSK’s thrust ball bearings deliver unmatched performance—proving why they remain the preferred choice for engineers worldwide.

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Designations Nominal Dimensions Basic Load Ratings Speeds
Limiting Speeds
d
mm
D
mm
T,T3
mm
T4
mm
r(min.)
mm
Ca
N
C0a
N
Grease
min-1
Oil (Oil-bath)
min-1
51152X
260
320
45
1.5
233000
990000
800
1200
53252X
260
360
82.8
2.1
435000
1800000
560
850
51252X
260
360
79
2.1
435000
1800000
560
850
53252XU
260
360
82.8
93
2.1
435000
1800000
560
850
51156X
280
350
53
1.5
315000
1310000
710
1000
53256X
280
380
85
2.1
450000
1950000
530
800
51256X
280
380
80
2.1
450000
1950000
530
800
53256XU
280
380
85
94
2.1
450000
1950000
530
800
51128X
140
180
31
1
107000
375000
1300
2000
51228X
140
200
46
1.5
186000
575000
1000
1500
53228X
140
200
48.6
1.5
186000
575000
1000
1500
53228XU
140
200
48.6
55
1.5
186000
575000
1000
1500
51328X
140
240
80
2.1
370000
1130000
670
1000
53328X
140
240
84.9
2.1
370000
1130000
670
1000
53328XU
140
240
84.9
92
2.1
370000
1130000
670
1000
51428X
140
280
112
4
550000
1750000
530
800
53428X
140
280
117
4
550000
1750000
530
800
53428XU
140
280
117
131
4
550000
1750000
530
800
51130X
150
190
31
1
110000
400000
1300
1900
51230X
150
215
50
1.5
238000
735000
950
1400
53230X
150
215
53.3
1.5
238000
735000
950
1400
53230XU
150
215
53.3
60
1.5
238000
735000
950
1400
51330X
150
250
80
2.1
380000
1200000
670
1000
53330X
150
250
83.7
2.1
380000
1200000
670
1000